How severe is CVE-2020-18449?

CVE-2020-18449 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-18449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-18449?

CVE-2020-18449 affects Ukcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-18449?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-18449 published?

CVE-2020-18449 was published on 2021-08-12 and last updated on 2026-06-17.

CVE-2020-18449

CVE-2020-18449 is a medium-severity vulnerability in Ukcms with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ukcms
Published: 2021-08-12
Last modified: 2026-06-17

Description

Cross Site Scripting (XSS) vulnerability exists in UKCMS v1.1.10 via data in the index function in Single.php

Frequently asked questions

What is CVE-2020-18449?: Cross Site Scripting (XSS) vulnerability exists in UKCMS v1.1.10 via data in the index function in Single.php
How severe is CVE-2020-18449?: CVE-2020-18449 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-18449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-18449?: CVE-2020-18449 affects Ukcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-18449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-18449 published?: CVE-2020-18449 was published on 2021-08-12 and last updated on 2026-06-17.

References

https://github.com/yxcmf/ukcms/issues/3

Affected products (1)

cpe:2.3:a:ukcms:ukcms:1.1.10:*:*:*:*:*:*:*

More vulnerabilities in Ukcms

CVE-2019-10888 — High (CVSS 8.8): A CSRF Issue that can add an admin user was discovered in UKcms v1.1.10 via admin.php/admin/role/add.html.
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